2

Greetings,

I run LAMP on an Ubuntu 8.04 server. I recently completed a "sudo apt-get upgrade" and upgraded all components found.

After this, my Apache frequently uses way too much cpu which in turn causes the website its running to become inaccessible. Before the upgrade it never exceeded around 2-3%.

Doing a "sudo /etc/init.d/apache2 restart" does not restart Apache, it has to be killed using "killall apache".

I am running

PHP 5.2.4-2ubuntu5.7 with Suhosin-Patch 0.9.6.2 (cli) (built: Aug 21 2009 19:52:39) Copyright (c) 1997-2007 The PHP Group Zend Engine v2.2.0, Copyright (c) 1998-2007 Zend Technologies Server version: Apache/2.2.8 (Ubuntu) Server built: Aug 18 2009 14:18:10

Here is a screenshot taken of "htop": http://bayimg.com/image/hadoeaack.jpg

And here is one of "munin": bayimg.com/image/hadobaack.jpg

I would be eternally grateful for any help as I am loosing users by the minute! Thank you!

Edit: Maybe there is some correlation here:

1144 [Wed Sep 02 03:29:11 2009] [error] server reached MaxClients setting, consider raising the MaxClients setting 1145 [Wed Sep 02 10:07:48 2009] [notice] caught SIGTERM, shutting down 1146 [Wed Sep 02 10:08:22 2009] [notice] Apache/2.2.8 (Ubuntu) mod_ssl/2.2.8 OpenSSL/0.9.8g configured -- resuming normal operations ------------------- 1162 [Wed Sep 02 16:10:14 2009] [error] server reached MaxClients setting, consider raising the MaxClients setting 1163 [Wed Sep 02 19:03:53 2009] [notice] caught SIGWINCH, shutting down gracefully 1164 [Wed Sep 02 19:04:13 2009] [notice] Apache/2.2.8 (Ubuntu) mod_ssl/2.2.8 OpenSSL/0.9.8g configured -- resuming normal operations 1165 [Wed Sep 02 19:05:52 2009] [error] server reached MaxClients setting, consider raising the MaxClients setting

But reaching MaxClients should not cause Apache to crash...? Surely?

Improve this question
8
  • You should read this httpd.apache.org/docs/2.0/mod/prefork.html Commented Sep 3, 2009 at 5:45
  • Also, can you post the output of "free -m"? Commented Sep 3, 2009 at 5:45
  • Reading "free -m": total used free shared buffers cached Mem: 2017 1865 152 0 121 1520 -/+ buffers/cache: 222 1794 Swap: 5906 0 5906 Commented Sep 3, 2009 at 5:51
  • "free -m": bayimg.com/image/ladogaack.jpg Commented Sep 3, 2009 at 5:53
  • munin memory log: bayimg.com/image/madocaack.jpg Commented Sep 3, 2009 at 6:01

1 Answer 1

Reset to default
2

I ended up solving it this way:

sudo dpkg --get-selections | grep apache sudo dpkg --get-selections | grep php

to find all of the apache/php packages, and then

sudo apt-get remove --purge apache2 apache2-mpm-worker apache2-threaded-dev apache2-utils apache2.2-common libapache2-mod-python libapache2-mod-python-doc libapache2-mod-wsgi

to completely remove them.

Then reinstalled the same packages using

sudo apt-get install apache2 apache2-mpm-worker apache2-threaded-dev apache2-utils apache2.2-common libapache2-mod-python libapache2-mod-python-doc libapache2-mod-wsgi

This gives you a completely fresh install of Apache and PHP.

Thanks to http://dancingpenguinsoflight.com/2009/02/how-to-completely-reset-an-apache-instance-in-ubuntu/

Improve this answer

You must log in to answer this question.